Calculating-machine.



R. VON REPPE-RT. CALCULATING MACHINE.- APPLICATION man DEC. I8. 1911 l9SHEETS-SHEET I.

Patented Apr. 29, 1919.

R. vow REPPER T. CALCULATING MACHINE. APPLICATION FILED DEC. H3, 19!?-1,302,250. Patented Apr. 29,1919.

I9 SHEETS-SHEET 2.

El wa /11m R. VON REPPERT. CALCULATING MACHINE- APPLICATION man 05c. 18.19:7.

Patented Apr. 29, 1919.

19 SHEETS-SHEET 3- R VON REPP'EBT.

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I9 SHEETS-SHEET 4.

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1,302,250. Patented Apr.29,1919

1s SHEETS-SHEET .5.

R. VON REPPERT. CALCULATING MACHINE. APPLICATION FILED DEC. I8. 1917Patented Apr. 29,1919.

I9 SHEETS-SHEET 6.

Will/III R. VON REPPERT.

CALCULATING MACHINE.

APPLICATION FILED DEC. I8. 1917.

R. VON REPPERT. CALCULATING MACHINE.

APPLICATION FILED DEC. I8, 19!]- 1,302,250.

I9 SHEETS-SHEET B.

Patented Apr. 29, 1919.

R. vow REPPERT. CALCULATING MACHINE.

APPLICATION FILED DEC.I3, 19!]. 1,302,250, Patented Apr. 29, 1919.

19 SHEETS-SHEET 9.

8. VON REPPERT.

CALCULATING MACHINE. APPLICATION FILED DEC. I8. I917.

Patented Apr. 29, 1919.

I9 SHEETSSHEET I0.

R. VON REPPERT.

CALCULAHNG MACHINE.

APPHCATIOH man Dams. i917;

Patented Apr. 29, 1919.

19 SHEETS-SHEET II.

R. VON REPPERT. CALCULATING MfxcHlNE APPLICATION FILED 050. I8, 1911.

Patented Apr. 29, 1919.

19 SHEETS SHEET 12.

R. VON REPPERL. CALCULATING MACHINE-- APPucAn'ou FILED Dscixh. 1911.

Patented Apr. 29,1919.

19 SHEETS-SHEET [3.

R. vow REP PERT. CALCULATING MACHENE. APPLICATlbN FILED DEC. 18, 1917.

Patented Apr. 29,1919.

8.. VON REPPERL. CALCULATING MACHINE. APPLICATION HLED [156.18. 1911.

Patented Apr. 29,1919.

I9 SHEETSSHEET 15- R. VON REPPERT. CALCULATING MACHINE.

APPLICATION FILED DEC. i8. 1917.

Patented Apr. 29, 1919.

*wzz m R. VON REPPERT. CALCULATING MACHINE.

APPLICATION FILED DEC. 18, 191-7. I I 1,302,250. Patented Apr. 29,1919.

l9 SHEETSSHEET l7- Milka R'. VON REP ERT. CALCULATING MACHINE.

APPLICATION FILED DEC.I8. 1917.

Patented Apr. 29,1919

l9 SHEETSS HEET 18- 4% 55' R. vow REPPR T. CALCULATING MACHINE.

APPLICATON FILED DEC. 18, 1911.

kin;

may a2 RICHARD VON REPPERT, OF ST. LOUIS, MISSOURI.

CALCULATING-MACHINE.

Specification of Letters Patent.

Application filed December 18, 1917. Serial No. 207,682.

To all whom it may concern:

Be it known that I, RICHARD vox REPPERT, a citizen of the United States,and a resident of thecity of St. souri, have invented certain new anduseful Improvements in Calculating-Machines, of which the following is aspecification.

This invention relates to calculating machines, and has for itsprincipal object to provide for the use of an ordinary typewriterinconnection with a calculating n1achine. I

The invention consists in a machine having typewriting and calculatingdevices adapted to be used separately and to be operatively connected toperform commercial work in a simple and practical manner, and in whichthe typewriter numeral keys can be used to simultaneously print andactuate the calculating devices, as, for instance, to print. amultiplicand and then the multiplier, and simultaneously with theseoperations, actuate the calculating devices to multiply and to show theproduct on the numeral dials; furthermore, to print this product by theoperation of the typewriter numeral keys and simultaneously therewithactuate the calculating devices, so that the operation of clearing thisproduct out of the machine will show whether or not the product has beenproperly printed, thereby simplifying the operation of the machine andthe construction thereof. and eliminating the chance of errors resultingfrom repeating an item on two key boards, one for printing and the otherone for calculating.

The invention further consists in having the typewriter numeral keysadapted to simultaneously write an item and register the written item inan iteniregister having nu meral disks to visually display the item, andthereby establish operative connection of the multiplving devices,corresponding to the numerals of the item printed and registered, withthe totalizing devices.

The invention further consists in a machine having provision for themounting of a number of interchangeable totaliZers, which may be eitheradding or subtracting totaliZers and which can conveniently be soconnected that movement representing an item or part products'ma'y beimparted to any one or all of said totali zers simultaneousl y, wherebyaddition, subtraction, multi; plica-tion or division maybesimultaneously Louis and State of Mis- Patented Apr. 29, 1919; f

effected in any one or more of said totalizer's according to theirrespective adoptions.

The invention further consists in a clearing device for clearing o'rresetting the to i to normal or zero position and fortalizerssimultaneously clearing all such totalizers as may be set to representthe same total, and

furthermore, for clearing any totalizer so as thereby to add or subtractthe total so cleared out, to or from any one or more totalizers, asdesired.

The invention further consists in a special tabulatmg key which willsimultaneously escape the typewriter platen and the item register apredetermined distance and thereby establish cooperation between themult1- ply ng devices and the total wheels of a certain decimal orderfor the purpose of properly positioning the product or total withrespect to the decimal point.- i

The invention further consists in a settable connection forthetypewriter back-space key so that upon operation of same it will escapethe item register a unit movement and thereby establish cooperationbetween the multiplying devices and the total wheels of certain decimalorder for the purpose of properly positioningv the product or total withrespect to the decimal point.

' The invention further consists in an extra set of multiplying keysrepresenting the numerals 0 to 9 adapted to be actuated to multiply anitem without printing it.

The invention further consists in a backspace key for the item registerto back-space the carriage to thereby establish operative connection ofthe multiplying devices with the total wheels of a certain decimal orderas is necessary in the operation of division by subtraction.

The invention further consists in the arrangements and combinations ofparts hereinafter described and claimed. 1

In the drawings, in which like symbols are used to designate like partswherever they appear,

Figure l is a side elevation of the entire machine Y v Fig. 2 is a frontelevation of the front part of the machine with some parts omitted and apart of the casing broken off to show the controlling devices;

- F g. 3 is a longitudinal section at the lin register connections;

of Figs. 4, 5 and 9, and-showsthe

